White emission via electroplex formation at poly(N-vinylcarbazole)/2,9- dimethyl-4,7-diphenyl-1,10-phenanthroline interface

Yuan Min Wang; Feng Teng; Zheng Xu; Yan Bing Hou; Sheng Yi Yang; Lei Qian; Ting Zhang; De Ang Liu

doi:10.1016/j.apsusc.2004.04.031

White emission via electroplex formation at poly(N-vinylcarbazole)/2,9- dimethyl-4,7-diphenyl-1,10-phenanthroline interface

Yuan Min Wang^*
, Feng Teng
, Zheng Xu
, Yan Bing Hou
, Sheng Yi Yang
, Lei Qian
, Ting Zhang
, De Ang Liu

^*Corresponding author for this work

Beijing Jiaotong University
Displays/M.

Research output: Contribution to journal › Article › peer-review

61 Citations (Scopus)

Abstract

The photoluminescence (PL) and electroluminescence (EL) properties of OLEDs based on poly(N-vinylcarbazole)(PVK) and 2,9-dimethyl-4,7-diphenyl-1,10- phenanthroline (BCP) have been studied. A new emission at 595nm has been observed in EL spectra but not in PL spectra of the devices. We suggest the new emission originates from the electroplex occuring at PVK-BCP interface. White emission via electroplex has been obtained in all the OLEDs. CIE coordinates of device ITO/PEDOT:PSS/PVK/BCP/Alq ₃ /LiF/Al is (0.31, 0.33) at 18V. Alq ₃ layer plays an important role in tuning the recombination zone and enhancing the electroplex emission.

Original language	English
Pages (from-to)	251-255
Number of pages	5
Journal	Applied Surface Science
Volume	236
Issue number	1-4
DOIs	https://doi.org/10.1016/j.apsusc.2004.04.031
Publication status	Published - 15 Sept 2004
Externally published	Yes

Keywords

Electroplex
PVK-BCP interface
White emission

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10.1016/j.apsusc.2004.04.031

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@article{23c693b743e74fbaa4c0640fb3d36e2d,

title = "White emission via electroplex formation at poly(N-vinylcarbazole)/2,9- dimethyl-4,7-diphenyl-1,10-phenanthroline interface",

abstract = " The photoluminescence (PL) and electroluminescence (EL) properties of OLEDs based on poly(N-vinylcarbazole)(PVK) and 2,9-dimethyl-4,7-diphenyl-1,10- phenanthroline (BCP) have been studied. A new emission at 595nm has been observed in EL spectra but not in PL spectra of the devices. We suggest the new emission originates from the electroplex occuring at PVK-BCP interface. White emission via electroplex has been obtained in all the OLEDs. CIE coordinates of device ITO/PEDOT:PSS/PVK/BCP/Alq 3 /LiF/Al is (0.31, 0.33) at 18V. Alq 3 layer plays an important role in tuning the recombination zone and enhancing the electroplex emission.",

keywords = "Electroplex, PVK-BCP interface, White emission",

author = "Wang, \{Yuan Min\} and Feng Teng and Zheng Xu and Hou, \{Yan Bing\} and Yang, \{Sheng Yi\} and Lei Qian and Ting Zhang and Liu, \{De Ang\}",

year = "2004",

month = sep,

day = "15",

doi = "10.1016/j.apsusc.2004.04.031",

language = "English",

volume = "236",

pages = "251--255",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

number = "1-4",

}

TY - JOUR

T1 - White emission via electroplex formation at poly(N-vinylcarbazole)/2,9- dimethyl-4,7-diphenyl-1,10-phenanthroline interface

AU - Wang, Yuan Min

AU - Teng, Feng

AU - Xu, Zheng

AU - Hou, Yan Bing

AU - Yang, Sheng Yi

AU - Qian, Lei

AU - Zhang, Ting

AU - Liu, De Ang

PY - 2004/9/15

Y1 - 2004/9/15

N2 - The photoluminescence (PL) and electroluminescence (EL) properties of OLEDs based on poly(N-vinylcarbazole)(PVK) and 2,9-dimethyl-4,7-diphenyl-1,10- phenanthroline (BCP) have been studied. A new emission at 595nm has been observed in EL spectra but not in PL spectra of the devices. We suggest the new emission originates from the electroplex occuring at PVK-BCP interface. White emission via electroplex has been obtained in all the OLEDs. CIE coordinates of device ITO/PEDOT:PSS/PVK/BCP/Alq 3 /LiF/Al is (0.31, 0.33) at 18V. Alq 3 layer plays an important role in tuning the recombination zone and enhancing the electroplex emission.

AB - The photoluminescence (PL) and electroluminescence (EL) properties of OLEDs based on poly(N-vinylcarbazole)(PVK) and 2,9-dimethyl-4,7-diphenyl-1,10- phenanthroline (BCP) have been studied. A new emission at 595nm has been observed in EL spectra but not in PL spectra of the devices. We suggest the new emission originates from the electroplex occuring at PVK-BCP interface. White emission via electroplex has been obtained in all the OLEDs. CIE coordinates of device ITO/PEDOT:PSS/PVK/BCP/Alq 3 /LiF/Al is (0.31, 0.33) at 18V. Alq 3 layer plays an important role in tuning the recombination zone and enhancing the electroplex emission.

KW - Electroplex

KW - PVK-BCP interface

KW - White emission

UR - https://www.scopus.com/pages/publications/4043103996

U2 - 10.1016/j.apsusc.2004.04.031

DO - 10.1016/j.apsusc.2004.04.031

M3 - Article

AN - SCOPUS:4043103996

SN - 0169-4332

VL - 236

SP - 251

EP - 255

JO - Applied Surface Science

JF - Applied Surface Science

IS - 1-4

ER -

White emission via electroplex formation at poly(N-vinylcarbazole)/2,9- dimethyl-4,7-diphenyl-1,10-phenanthroline interface

Abstract

Keywords

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